1151231044 has 6 divisors (see below), whose sum is σ = 2014654334. Its totient is φ = 575615520.

The previous prime is 1151231023. The next prime is 1151231047. The reversal of 1151231044 is 4401321511.

It can be written as a sum of positive squares in only one way, i.e., 811566144 + 339664900 = 28488^2 + 18430^2 .

It is not an unprimeable number, because it can be changed into a prime (1151231047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143903877 + ... + 143903884.

Almost surely, 2^1151231044 is an apocalyptic number.

It is an amenable number.

1151231044 is a deficient number, since it is larger than the sum of its proper divisors (863423290).

1151231044 is a wasteful number, since it uses less digits than its factorization.

1151231044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287807765 (or 287807763 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1151231044 is about 33929.7958142987. The cubic root of 1151231044 is about 1048.0632609968.

Adding to 1151231044 its reverse (4401321511), we get a palindrome (5552552555).

The spelling of 1151231044 in words is "one billion, one hundred fifty-one million, two hundred thirty-one thousand, forty-four".